Forged chrome vanadium steel sockets with s2 steel hex stock bits sockets heat treated and chrome plated for resistance to corrosion satin finish with knurled ring to assist gripping with greasy fingers contents length 55mm t20 t25 t27 t30 t40 t45 t50 t55 t60 t70 length 100mm t20 t25 t27 t30 t40 t45 t50 t55 t60 t70 length 140mm t40 t45 t50 t55 t60 t70 length 200mm t40 t45 t50 t55 t60 t70 supplied in composite carry case